fix: revert to the `serve` script name for previewing
1. it's the default in vite templates, users might be used to it already
2. `preview` starts with a `pre` string, making npm failing to recognize
and auto-run the `prepreview` script before it
1. there's a bug in `@cypress/vue` at the moment https://github.com/cypress-io/cypress/issues/17480
2. no need to fail the whole build process only because of a type error
in a spec file.
We may add a specific command to typechecking the spec files later